Tired of Unpredictable Electrical Problems in Your 2002 GM Truck or SUV?
If you’re dealing with flickering lights, malfunctioning power windows or locks, or a security light that won’t turn off, you’re likely facing a failing Body Control Module (BCM). As the central nervous system for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and seemingly unrelated issues. This isn’t just an annoyance; it can affect vehicle security and safety. I’ve seen it countless times: a customer comes in with a list of electrical gremlins that seem impossible to trace, and the culprit is a failing BCM.
This is your direct, dealership-free solution. We are offering a genuine replacement 2002 Escalade BCM, part number 19208544, that arrives at your door pre-programmed to your vehicle’s specific VIN. We handle the complex part by flashing it with the latest GM software updates, so you can skip the expensive trip to the dealer for programming. This is the most efficient way to restore your vehicle’s electronic functions and get back on the road with confidence.
A Technician’s Notebook: The Intermittent Window Failure
A customer brought in his ’02 Yukon XL, complaining that the driver’s side window would only work sometimes. He’d already replaced the switch and the window motor, but the problem persisted. When I hooked up my scan tool, I noticed intermittent communication loss codes (U-codes) pointing to the BCM. These modules, especially on this GMT800 platform, are notorious for developing cold solder joints on the main circuit board. Temperature changes cause them to expand and contract, breaking the connection. We swapped in a pre-programmed BCM like this one, and the problem was solved instantly. It’s a classic failure I’ve diagnosed over a hundred times.
Common Signs of a Failing BCM
If your vehicle is experiencing any of these symptoms, a faulty BCM is the most likely cause. A failing module can sometimes store communication codes like U0140.
- ✔ Erratic or non-functional power windows and door locks.
- ✔ Interior or exterior lights staying on or not working at all.
- ✔ The security system light flashing, preventing the vehicle from starting.
- ✔ Horn honking randomly or not working when pressed.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Key fob not responding consistently.
A Straightforward Guide to Installation
Installing your new BCM is a manageable job for a DIYer with basic tools. The module is typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Access the Module: You may need to remove the lower dash panel (knee bolster) to gain clear access to the BCM. It’s usually held in by a few screws or clips.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old module from its mounting bracket.
- Install the New BCM: Mount your new, pre-programmed BCM in the same location and securely reconnect all the electrical harnesses.
- Final Steps: Reinstall the dash panel and reconnect the negative battery terminal. Turn the key to the ‘ON’ position and check for proper function of lights, locks, and windows.
Important Post-Installation Information
While this BCM is programmed for a simple installation, some vehicle systems may require a relearn procedure:
- Airbag System (SRS): If your airbag warning light is on after installation, a professional scan tool is needed to perform the “Setup SDM Primary Key in BCM” procedure. This syncs the new BCM with the airbag module.
- Brake Pedal Position (BPP) Sensor: On some models, a BPP sensor relearn may be required to ensure your brake lights and traction control system function correctly.
Disclaimer: Procedures can vary. Always consult a factory service manual for your specific vehicle if you are unsure.
Will This Fit My Truck?
This module is a direct-fit replacement for the following 2002 models, and is compatible with service numbers 15063577, 15081857, 19208544, 15095335, DKAJ, and DPNW.
- ✔ 2002 Cadillac Escalade (4×4)
- ✔ 2002 Cadillac Escalade EXT
- ✔ 2002 Chevrolet Avalanche 1500 (4×4)
- ✔ 2002 Chevrolet Suburban 1500 (4×4)
- ✔ 2002 Chevrolet Tahoe (4×4)
- ✔ 2002 GMC Yukon (4×4)
- ✔ 2002 GMC Yukon XL 1500 (4×4)
Frequently Asked Questions
How does the VIN programming process work?
It’s simple. After you complete your purchase, you will need to send us your 17-digit Vehicle Identification Number (VIN). Our technicians will then use this VIN to flash the BCM with the correct GM software and vehicle-specific settings before we ship it to you.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your original module, which can be helpful for reference or if you ever need to revert to the original state for any reason.
What tools are required for the post-installation procedures?
The Airbag System Sync and Brake Pedal Position Relearn require a bi-directional professional diagnostic tool, such as a Tech 2 or a high-end Snap-on or Autel scanner. These procedures cannot be performed with a basic code reader.
Will this fix my ‘Service 4WD’ light?
While the BCM communicates with many systems, a ‘Service 4WD’ message is more commonly caused by the Transfer Case Control Module (TCCM) or the encoder motor. It’s best to have the vehicle properly diagnosed to pinpoint the exact cause before ordering parts.
Is this a brand new part?
This is a high-quality, tested replacement part that has been programmed with the latest software from GM. It is guaranteed to restore the function of your vehicle’s body electronics and is backed by our warranty.